docker-volume-backup VS kopia

I am interested in coming up with a backup plan before I get too invested in this setup. I found the docker-volume-backup project that looks like it might be a possible solution. However I'm not sure how to implement it using docker swarm since I am new to all of this. I would be interested in learning what backup solution you use for your docker swarm servers.

How do people usually backup their self-hosted docker services using postgres? I have been using docker-volume-backup [0] and just saving the postgres data directory, but I've found it requires a minute of downtime to backup properly.

[0] https://github.com/offen/docker-volume-backup

Offen: https://github.com/offen/docker-volume-backup

To solve points 1,2 i 3 I think it would be best to make the copy by stopping the container first. I've been looking for utilities and I've found some like offen/docker-volume-backup. Again, the disadvantage is that you have to configure everything (mount points, files, users, passwords...) manually for each container, so it is very easy to forget to create the backup of one of them. Also, the scheduling would not be centralised, so the backup wouldn't be run sequentially container after container. I've searched a lot, but I haven't found any good alternative. How are you dealing with the backup of containers?

Since I'm using docker rootless, I've run into issues using convenient solutions such as offen. These solutions don't work in a rootless context due to file permissions. The user in the offen container cannot read some directories owned by other containers. This is usually an issue with databases.

FYI this looks like the actively developed version of that utility: https://github.com/offen/docker-volume-backup

You should have backup OS and data but using a separate backup jobs. Backup OS drive using Timeshift or Veeam Agent. Backup Docker server's containers using Offen or Borg. OS backup would allow you restore operating system while data backup would allow recover files.

There is the image docker-volume-backup that allows you to make backup but depending on the situation (databases, ...) it is not necessarily the best solution

I think Kopia would be great for your use case

https://kopia.io/

It has a great system to snapshot files but only store data if it's changed. I use it in an environment where I can't use something like zfs to snapshot data because I don't have the ability to make decisions about what filesystem we're using. It's been amazing, love it so much!

Thanks for the tip on Kopia. Setting it up now, looks perfect.

https://github.com/kopia/kopia

Kopia - GitHub

I've been happy with: https://kopia.io/

Fairly easy to configure, does snapshots to S3 and has a icon in my tray I can watch :)

Btw, kopia is one fine backup tool. Apparently borgbackup is good too.

Kopia is great, though it's worth noting for folks on Linux: non-UTF-8 paths aren't stored correctly [1] and xattrs aren't stored [2]. While most folks probably won't care about the former, the latter can could cause issues (eg. losing SELinux labels makes it difficult to restore a backup of the root filesystem on distros that use SELinux).

[1] https://github.com/kopia/kopia/issues/1764

[2] https://github.com/kopia/kopia/issues/544

I think Kopia [1] is on its way to be that. I am sticking to Restic for now but it seems like the strongest contender.

[1]: https://github.com/kopia/kopia

I used their trial for a bit to test it out with Vorta [1] in a container. Vorta (and Borg) seemed to work fine, until I wanted to restore an archive and I noticed that my recent snapshots were completely empty. Probably because of a misconfiguration on my end though. But it made me look elsewhere. For me backups should be a fire, test and forget solution.

Recently I made the switch to Kopia [2] which seems to have feature parity with Borg (and Restic [3]). It also has a web UI which is way easier to work with than Vorta. And I can easily view, extract and restore individual files or folders from there. This gave me way more confidence about this solution. The only thing I really miss is that I cannot chose different targets for different paths. For instance, with Borg I was able to backup a partial of my Docker appdata to an external source. And I haven't found a way to do this with Kopia. Besides that I'm pretty happy with this solution and I would recommend it.

1. https://vorta.borgbase.com/

2. https://kopia.io/

3. https://restic.net/

There's a few. Off the top of my head

https://github.com/kopia/kopia